Wall covering and the like



Patented Apr. 2, 1946 2,397,817 wan. covnma am) 'rnn LIKE Le Roy W.Stannton, Evanston, John W. Close,

Lombard, and Roy A. Hess, Chicago, 111., assignors to Trimz CompanyInc., Chicago, 11]., a corporation of Delaware No Drawing. ApplicationMay 3, 1943, Serial No. 485,488

3 Claims.

The present invention relates to surface coverings of fibrous material,and more in particular to such coverings which have been treated with anodor emitting substance.

Among the objects of the present invention is to provide a novel wallcovering having incorporated within the body thereof any suitable odoremitting substance, and to form said covering in such a way that theodor from said substance is retained by the material and graduallyemitted over a period of time after the covering has been applied to awall or the like.

Another object of the present invention is to provide a novel wallcovering as immediately hereinabove described, in which a retardant isincorporated therein to prolong the diffusion of the odor from thesubstance by slowing down the evaporation of the same.

The invention comprehends the application of an odor emitting substanceto a wall covering in the form of a sheet of fibrous material, which istreated on one or both of its surfaces with a sealing agent adapted todecrease the permeability of the fibrous stock, whereby the odor is moreeffectively retained within the fibrous structure of the sheet andgradually emitted after the covering is applied to a wall structure orthe like.

The invention is further characterized as involving the use of aretardant, as above mentioned, which has the added function ofdecreasing the diffusion of the odor from the substance applied to thecovering, to thus prolong the useful life of the covering as applied tothe wall and to assure the more gradual diffusion of the odor into theroom in which the .walls are surfaced with such covering.

The invention in another of its aspects contemplates incorporating asuitable odor emitting substance in a sheet of fibrous material, sealingthe same by application of a suitable sealing agent to one of thesurfaces thereof, and to apply in the manufacture of the wall coveringan adhesive which may have an odor emitting substance incorporatedtherein so that upon application of the covering to a wall structure orthe like, such odor will be diffused upon moistening of the adhesive inthe hanging or application of such'covering to the wall or the like.

A still further object of the present inventio is to form wall coveringsas immediately hereinabove described, in which suitable retardants areused to assure a more gradual diflusion of the odor emitting substancefrom the covering over greater periods of time.

Other objects, features, capabilities and advantages are comprehended bythe invention, as will later appear and as are inherently possessedthereby.

While the invention contemplates wall coverings of various types inwhich some suitable odor emitting substance has been incorporated,nevertheless for the purposes of this application reference will be madeto a pre-pasted wall paper made from paper stock and treated with oil ofcedar to secure, as the finished product, a paper simulating cedar wood,and which finds use as a wall covering for closets or the like where itis desired to protect "articles of clothing and the like from moths orother insects. The paper in its finished form may be readily applied tothe surfaces of such closets or other compartments, and is adapted togradually give off the odor from the oil of cedar to repel moths andother insects, thus protecting articles of clothing and apparel whichmay be stored therein.

According to the present invention as it relates specifically to the useof oil of cedar as an odor emitting substance, the layer of paper stockmay have printing applied to one surface thereof which simulates thegrain of cedar wood. While this'is not essential, nevertheless suchprinting has a certain decorative appeal, and where the paper is appliedto closets or other like compartments, the effect is similar to that tobe secured by the use of cedar wood in the formation of said closet orthe like. The procedure involved in manufacturing such a wall coveringfurther includes the application of a sealing agent to the printed sideof the paper stock. This sealing agent renders the surface of the paperstock substantially waterproof, thus making the surface washable, whichis highly desirable in a product of this kind, Furthermore, the sealingagent has the property-of closing the pores of the paper stock thusdecreasing its permeability and greatly decreasing the diffusion of theodor emitting substance incorporated within the said paper stock.

A suitable sealing agent may comprise a layer or coating of plasticmaterial, one illustration being as follows:

1 part 28% ammonia solution 12 parts dry casein (commercial paper makerscasein) 58 parts of water Formaldehyde in the amount of 15% of the drycasein used The parts used of the various ingredients for used is aproportional part by weight oi the dry casein which is used in the mix.These ingredients mixed in the above proportions may bereadily appliedto the surface of the paper stock and allowed to dry. Upon drying, sucha mix results in a casein plastic admirably suited for the purposeintended.

Following theapplication of the sealing agent to the printed side of thepaper stock, the odor emitting substance may be applied to the otherside of the paper stock. It has been found desirable in the case of theapplication of cedar oil to the paper stock to apply the same as a wateremulsion to which is added a suitable retardant. For example, the oil ofcedar and retardant may be mixed together, after which the same may beformed into a water emulsion by the application oi suitable quantitiesof water. In accordance with the specific illustration of the inventionherein being described, onev part of rosin-size may be mixed with from 4to'20 parts of oil of cedar. The oil of cedar used in this mix ispreferably that which is obtained from cedar wood, although it ispossible to use the oil obtained from cedar leaves. To one part oftheabove mixture water is added in the proportions of from one to twoparts to form the water emulsion. As in the previous illustration, allparts herein specified are parts by weight of the various ingredientsused.

. Such a water emulsion may be applied in any desired manner to theuncoated side of the paper stock, immediately after which a suitableadhesive is applied without the dryingof the mix including the odoremitting substance. Any suitable paste or adhesive may be used, such forexample as described in the Bauer Patents Nos. 2,183,532, 2,215,846,2,215,848 and 2,215,849.

In order to secure a very definite odor of cedar oil at the time thiswall paper is applied, the adhesive may have oil of cedar mixedtherewith in the proportion of 2 /2 by weight of the adhesive used.Preferably, the oil of cedar should be the oil obtained from cedarleaves for the reason that the odor from such oil is diffused morereadily upon application of water to the adhesive than would be obtainedwere the oil from cedar wood used. In order to retard the diffusion ofthe odor from the cedar oil incorporated in the adhesive, rosin-size maybe incorporated into the adhesive. According to the specificillustration of the invention herein being described, approximately 9parts by weight of adhesive or paste may be used to approximately onepart of rosin-size.

It may be stated that the rosin-size used in practising the presentinvention is a commercial product, well-known to the paper industry.

After the adhesive mix has been applied to the paper stock in anydesired manner, the same is allowed to dry and the resulting sheet ofpaper formed into rolls, preferably sealed to retain the odorincorporated therein until the same is used,

' and packaged in a suitable merchandising container, all in accordancewith usual commercial procedures. While the above procedure has beenfound highly desirable in forming a pre-pasted wall paper incorporatingan odor secured from oil of cedar, nevertheless the present inventioncontemplates such a wall covering incorporating other substances, suchas perfumes and the like, which difluse or emit odor in the same manneras oil of cedar. Such papers may be formed in accordance with the aboveprocedure to render the paper stock less permeable, so as to retain andgradually emit the odor from the incorporated substance over periods oftime.

While the above description is directed to a prepasted wall paper,nevertheless the invention in its broadest aspect contemplates wallcoverings in which adhesive may not be applied during the process ofmanufacture. Futhermore, either or both sides of the paper stock may besealed to encloseand contain the odor from the substance incorporatedtherein and to prevent the diffusion thereof when applied to a wallstructure or the like. For example, the paper stock may be treated witha sealing agent and have the odor emitting substance incorporatedtherein, the

1 sealing agent being applied to that surface which 25 would form theexterior surface of the wall or like structure to which the same mightbe applied. On the other hand, if it is desired to assure the retentionof the odor emitting substance over long periods of time, it might bedesirable to treat both sides of the paper stock by applying a sealingagent in the manner above described.

While we have herein described various embodiments of the invention, itis to be understood that the invention is not limited thereto, but maycomprehend other constructions, arrangements of parts, details andfeatures without departing from the spirit of the invention.

We claim:

. 1. As an article of manufacture, a pre-pasted wall paper characterizedas having a printed surface simulating cedar wood and having oil ofcedar together with a retardant therefor incorporated into the paperstock, said wall paper having its printed surface treated by theapplication of a casein plastic coating to decrease the permeability ofthe paper stock whereby the odor from said oil of cedar is retained bysaid paper stock and gradually emitted after application to a wall orthe like, said wall paper being further characterized by having acoating of adhesive applied to the opposite side thereof which hasincorporated therein, oil of cedar and a retardant

